Information recording medium, method for recording information, and method for reproduction information

Abstract

An information recording medium includes a first area (DA 2 ) for storing picture data for forming a plurality of pictures, a second area (DA 21 ) which is included in the first area and stores control data of the picture data, and a third area (INFO 1 ) which is included in the second area and stores specifying data for specifying the storage position of representative picture data for forming a representative picture in the plurality of pictures.

What is claimed is:  
     
       1. An information reproducing method for reproducing a representative picture recorded on an information recording disc, said information recording disc including, 
       a managing file in which management information is stored, and  
       an audio file in which audio information is stored or a video file in which video information is stored, wherein,  
       said audio file or said video file is configured to store a plurality of video objects, said video objects including object units, each object unit each including at least one of a video pack in which video data is recorded and an audio pack in which audio data is recorded,  
       said management information includes,  
       a plurality of program chain information including cell information representing cells, and  
       disc representative picture information for a disc representative picture,  
       at least one of said program chain information designates respective cell reproduction orders,  
       said cells refer to a part of one of said video objects,  
       said disc representative picture information includes information regarding a program chain number, a cell number, a picture point which describes a video object number representing recording contents of said information recording disc, and information regarding a time when said disc representative picture was made,  
       the information reproducing method comprising:  
       reading said management information;  
       referring to said disc representative picture information;  
       determining a position of said disc representative picture in said audio file or said video file, and  
       decoding said disc representation picture.  
     
     
       2. An information reproducing apparatus for reproducing a representative picture recorded on an information recording disc, said information recording disc including, 
       a managing file in which management information is stored, and  
       an audio file in which audio information is stored or a video file in which video information is stored, wherein,  
       said audio file or said video file is configured to store a plurality of video objects, said video objects including object units, each object unit each including at least one of a video pack in which video data is recorded and an audio pack in which audio data is recorded,  
       said management information includes,  
       a plurality of program chain information including cell information representing cells, and  
       disc representative picture information for a disc representative picture,  
       at least one of said program chain information designates respective cell reproduction orders,  
       said cells refer to a part of one of said video objects,  
       said disc representative picture information includes information regarding a program chain number, a cell number, a picture point which describes a video object number representing recording contents of said information recording disc, and information regarding a time when said disc representative picture was made,  
       the information reproducing apparatus comprising:  
       a reproducer for reproducing said management information, for referring to said disc representative picture information, and for determining a position of said disc representative picture in said audio file or said video file; and  
       a decoder for decoding said disc representation picture.  
     
     
       3. An information recording method for recording a representative picture on an information recording disc, said information recording disc including, 
       a managing file in which management information is stored, and  
       an audio file in which audio information is stored or a video file in which video information is stored, wherein,  
       said audio file or said video file is configured to store a plurality of video objects, said video objects including object units, each object unit each including at least one of a video pack in which video data is recorded and an audio pack in which audio data is recorded,  
       said management information includes,  
       a plurality of program chain information including cell information representing cells, and  
       disc representative picture information for a disc representative picture,  
       at least one of said program chain information designates respective cell reproduction orders,  
       said cells refer to a part of one of said video objects,  
       said disc representative picture information includes information regarding a program chain number, a cell number, a picture point which describes a video object number representing recording contents of said information recording disc, and information regarding a time when said disc representative picture was made,  
       the information recording method comprising:  
       determining a position of said disc representative picture in said audio file or said video file;  
       generating said disc representative picture information; and  
       recording said management information including said disc representative picture information.  
     
     
       4. An information recording apparatus for recording a representative picture on an information recording disc, said information recording disc including, 
       a managing file in which management information is stored, and  
       an audio file in which audio information is stored or a video file in which video information is stored, wherein,  
       said audio file or said video file is configured to store a plurality of video objects, said video objects including object units, each object unit each including at least one of a video pack in which video data is recorded and an audio pack in which audio data is recorded,  
       said management information includes,  
       a plurality of program chain information including cell information representing cells, and  
       disc representative picture information for a disc representative picture,  
       at least one of said program chain information designates respective cell reproduction orders,  
       said cells refer to a part of one of said video objects,  
       said disc representative picture information includes information regarding a program chain number, a cell number, a picture point which describes a video object number representing recording contents of said information recording disc, and information regarding a time when said disc representative picture was made,  
       the information recording apparatus comprising:  
       a first processor for determining a position of said disc representative picture in said audio file or said video file, and for generating said disc representative picture information; and  
       a second processor for recording said management information including said disc representative picture information.